At the end are the glaciers. And the rock faces.
http://farm5.static.flickr.com/4152/...74ec92db_b.jpg
http://farm5.static.flickr.com/4106/...21da841a_b.jpg
There are deep crevasses in the glacier where it would be dangerous to walk.
http://farm5.static.flickr.com/4090/...9ccd37cc_b.jpg